The shock of the first appearance of the vision had been nearly overbalanced by my eagerness to investigate, and my intense interest in the novel condition of mind or body which made such an experience possible. But after the utter failure of all my schemes and the collapse of my theories as to evident causes of the phenomenon, I began to be harassed and worried, almost unconsciously at first, by the ever-present thought, the daily anticipation, and the increasing dread of the hallucination. The self-confidence that first supported me in my nightly encounter diminished on each occasion, and the curiosity which stimulated me to the study of the phenomenon rapidly gave way to the sentiment akin to terror, when I proved myself incapable of grappling with the mystery. The natural result of this preoccupation was inability to work and little interest in recreation, and as the long weeks wore away I grew morose, morbid, and hypochondriacal. The pride which kept me from sharing my secret with my friend also held me at my post, and nerved me to endure the torment in the rapidly diminishing hope of finally exorcising the spectre or recovering my usual healthy tone of mind. The difficulty of my position was increased by the fact that the apparition failed to appear occasionally; and while I welcomed each failure as a sign that the visits were to cease, they continued spasmodically for weeks, and I was still as far away from the interpretation of the problem as ever. Once I sought medical advice, but the doctor could discover nothing wrong with me except what might be caused by tobacco, and, following his advice, I left off smoking. He said I had no malaria; that I needed more exercise, perhaps; but he could not account for my insomnia, for I, like most patients, had concealed the vital facts in my case, and had complained of insomnia as the cause of my anxiety about my health. The approach of spring tempted me out of doors, and in the warm villa gardens and the sun-bathed Campagna I could sometimes forget the nightmare that haunted me. This was not often possible, unless I was in the company of cheerful companions, and I grew to dread the hour when I was to return to the studio after an excursion into the country among the soothing signs of returning summer. To shut the clanging door of the studio was to place an impenetrable barrier between me and the outside world; and the loneliness of that interior seemed to be only intensified by the presence of my companion, who was apparently as much depressed in spirits as myself.